{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "2 . Fifteen non - smoking volunteers were exposed to sidestream SHS concentrations of 5000 micro g / m ( 3 ) , within a simulated car setting ."}
{"Chemical": []}